2.3 Organization Management for Track Slab Construction

2.3.1 Organizational structure

Based on requirement for project organization,the track slab yard sets up a leading group and functional“five departments and one laboratory”,i.e.engineering management department,safety and quality department,financial department,material and equipment department,general affairs department and laboratory,to ensure the efficient operation of engineering management,engineering quality and safety system.

On the principle of professional organization and standard management,and based on construction technology requirement,the operation level sets rebar processing,binding and installation squad,track slab manufacturing squad,track polishing,transportation and storage squad,mechanical maintenance squad,electrician squad and comprehensive functional squads or groups.

2.3.2 Personnel allocation

The dynamic management for labor force shall be implemented in construction according to progress of works and construction key points in different stages,to ensure the project completion on time(Table 4).

Table 4 List of Personnel Number of Functional Squad and Group

continued

The professional construction team shall be mainly made up of skilled technical workers,and the types of work shall be allocated reasonable and complete.All engineering shall be professionally constructed based on different items,to fully exert professional advantages and mechanical functions.The system of examining and assessment shall be established,and incentive mechanism shall be put into force,to mobilize the enthusiasm of workers to the utmost.

On the basis of overall job plan and actual site demands,workers at different positions shall be organized to attend pre-job training,to increase their quality and safety consciousness,and to enhance the education of law,regulation and labor discipline on site.

Squad and group combat effectiveness shall be enhanced,and work post responsibility shall be implemented.

The members of enterprise organization system,scaffold team leader and squad or group chiefs shall be regular staff of the enterprise.The labor force shall be mainly recruited from the local residents and assigned to corresponding positions after training,the local workers are easy to be managed compared with workers form other places;meanwhile,the local workers can improve the overall quality.

The labor force shall be allocated according to workload,the site construction shall be specifically divided,and the specific workload must be completed for every position within required time.

Personnel for special operations must attend the safety operating instruction organized by related authorities,and obtain valid certificates after passing the examination,and shall receive physical check-up.

2.3.3 Tooling equipment management

1.Tooling equipment configuration

The equipment department shall carefully carry out mechanical equipment configuration plan,and organize mechanical equipment to enter site and get out site according to dynamic management requirement.The allocation,transport,ordering,installation,commissioning for equipment,as well as technical training for operators shall be arranged and organized in detail;equipment configuration,repairing and maintenance shall be carried out according to the plans.Equipment management system shall be established,driver responsibilities shall be implemented,all test and inspection equipment and device shall beregisted,book account shall be established,the equipment and devices shall be calibrated and inspected periodically,the quick-wear parts and consumable parts shall be adequately prepared,the equipment efficiency shall be fully exerted,and the serviceability rate and the usage rate of equipment and vehicle shall be ensure.

The equipment shall be allocated as per three shifts in 24 h for one day.Within 8 h,the 26 sets of formworks(single track)shall be completed from track slab formwork removal to concrete pouring for track slab,in the remaining 16 h,the track slab shall be cured.

2.Equipment(tooling equipment)site acceptance,installation and commissioning

Different equipment shall be debugged and accepted according to their different purposes and features.The equipment of uniquespeciality shall be accepted according to national standard or industrial standard;if corresponding standards are unavailable,the manufacturer shall work out acceptance standard and debugging method,and shall organize the acceptance participated by the third party.

1)Special CNC grinding machine for track slab

The bridge-type CNC grinding machine shall be used for grinding processing and grinding for rail bearing platform of track slab.The equipment has three stations,i.e.workpiece preparation station,workpiece processing station and workpiece assembling station.

2)Production formwork for track slab

The production formwork for track slab is the plastic formwork for semi-manufactured track slab,with rail bearing platform and semi-manufactured track slab formed by one step.The formworks on the production line are transversely arranged,28 sets of formworks form a long-line pedestal production line(Figure 6 and Figure 7).

Figure 6 CNC Grinding Machine Grinding Track Slab

Figure 7 Example of Long-Line Pedestal Production Line